In this problem, the most probable and the most likely answer to this would be the second option which is cytoskeleton.
The grid-like lattice of proteins that gives the cell shape of the cell and support it is the cytoskeleton. The support done by the cytoskeleton would be mainly the cellular movement. Without the cytoskeleton, the cells would be deformed and also would result to its movements being inefficient and might also result to the destabilization of the cell's structure.
